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Note 4 (Tables)
9 Months Ended
Jun. 30, 2018
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Three Months Ended June 30, 2018
 
   
Income
   
Shares
   
Per Share
 
   
(Numerator)
   
(Denominator)
   
Amount
 
                         
   
(in thousands, except per share amounts)
 
Basic EPS
 
 
 
 
 
 
 
 
 
 
 
 
Net Earnings available to common stockholders
  $
26,129
     
18,698
    $
1.40
 
                         
Effect of Dilutive Securities
 
 
 
 
 
 
 
 
 
 
 
 
Options
   
-
     
124
     
(0.01
)
                         
Diluted EPS
 
 
 
 
 
 
 
 
 
 
 
 
Net Earnings available to common stockholders plus assumed conversions
  $
26,129
     
18,822
    $
1.39
 
   
Nine Months Ended June 30, 2018
 
   
Income
   
Shares
   
Per Share
 
   
(Numerator)
   
(Denominator)
   
Amount
 
                         
   
(in thousands, except per share amounts)
 
Basic EPS
 
 
 
 
 
 
 
 
 
 
 
 
Net Earnings available to common stockholders
  $
80,211
     
18,683
    $
4.29
 
                         
Effect of Dilutive Securities
 
 
 
 
 
 
 
 
 
 
 
 
Options
   
-
     
118
     
(0.02
)
                         
Diluted EPS
 
 
 
 
 
 
 
 
 
 
 
 
Net Earnings available to common stockholders plus assumed conversions
  $
80,211
     
18,801
    $
4.27
 
   
Three Months Ended June 24, 2017
 
   
Income
   
Shares
   
Per Share
 
   
(Numerator)
   
(Denominator)
   
Amount
 
                         
   
(in thousands, except per share amounts)
 
Basic EPS
 
 
 
 
 
 
 
 
 
 
 
 
Net Earnings available to common stockholders
  $
25,304
     
18,727
    $
1.35
 
                         
Effect of Dilutive Securities
 
 
 
 
 
 
 
 
 
 
 
 
Options
   
-
     
119
     
(0.01
)
                         
Diluted EPS
 
 
 
 
 
 
 
 
 
 
 
 
Net Earnings available to common stockholders plus assumed conversions
  $
25,304
     
18,846
    $
1.34
 
   
Nine Months Ended June 24, 2017
 
   
Income
   
Shares
   
Per Share
 
   
(Numerator)
   
(Denominator)
   
Amount
 
                         
   
(in thousands, except per share amounts)
 
Basic EPS
 
 
 
 
 
 
 
 
 
 
 
 
Net Earnings available to common stockholders
  $
54,831
     
18,708
    $
2.93
 
                         
Effect of Dilutive Securities
 
 
 
 
 
 
 
 
 
 
 
 
Options
   
-
     
110
     
(0.02
)
                         
Diluted EPS
 
 
 
 
 
 
 
 
 
 
 
 
Net Earnings available to common stockholders plus assumed conversions
  $
54,831
     
18,818
    $
2.91